MULTILAYER BROADBAND MICROWAVE FILTER Russian patent published in 2022 - IPC H01P1/203 

FIELD: filtering technology.

SUBSTANCE: invention relates to filters. A multilayer broadband microwave filter contains the first and second dielectric bases with microstrip lines located on them, according to the invention, the first and second straight microstrip lines are located on the first and second dielectric bases, and the first microstrip line is connected to the input of the microwave signal, and the second to the output of the microwave signal, a metal screen with a slit resonator rectangular in shape is located between the dielectric bases, the metal screen is located in close proximity to the first dielectric base, microstrip lines intersect at right angle with the projection of the slit resonator and end with a break at a distance of a quarter of a wavelength at the central frequency from the place of their intersection; frequency-selective links are located between the metal screen and the second dielectric base, the number of which can vary from 1 to N, where 1≤N≤3, each frequency-selective link consists of two dielectric bases, between which a rectangular strip resonator with a break at both ends is located parallel to the microstrip lines, close to the second dielectric at the base of the frequency-selective link there is a metal screen in which a rectangular slit resonator is cut, located parallel to the slit resonator, located in close proximity to the first dielectric base, while each frequency-selective link has specified amplitude-frequency characteristics and is implemented in a separate layer.

EFFECT: increase in manufacturability and a reduction in overall dimensions.

1 cl, 5 dwg